<!DOCTYPE html>
<html>
        <head>
                <title>TODO supply a title</title>
                <meta charset="UTF-8">
                <meta name="viewport" content="width=device-width, initial-scale=1.0">
        </head>
        <body style="background-color: #F0F0F0">
                <div style="position:absolute;  top:50%;  height:240px;border:1px solid #E7E5DC; background-color: #666666; margin:0 auto; margin-top:-120px; width:400px; left:50%; margin-left:-200px;text-align:center;">
                        <table style="width: 60%;margin-left: auto;margin-right: auto;margin-top:60px;">
                                <tr>
                                        <td colspan="2">用户登录</td>
                                </tr>
                                <tr>
                                        <td>用户名</td>
                                        <td><input name="" type="text"/></td>
                                </tr>
                                <tr>
                                        <td>密码</td>
                                        <td><input name="" type="password"/></td>
                                </tr>
                                <tr>
                                        <td colspan="2">
                                        <button>登录</button>
                                        </td>
                                </tr>
                        </table>
                </div>
        </body>
</html>
